am79c974 Advanced Micro Devices, am79c974 Datasheet - Page 35
am79c974
Manufacturer Part Number
am79c974
Description
Pcnettm-scsi Combination Ethernet And Scsi Controller For Pci Systems
Manufacturer
Advanced Micro Devices
Datasheet
1.AM79C974.pdf
(153 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
am79c974AKC
Manufacturer:
AMD
Quantity:
1 831
- Current page: 35 of 153
- Download datasheet (610Kb)
DEVSEL
FRAME
Basic Burst Read Cycles
All Am79C974 controller burst read transfers are of the
PCI command type Memory Read Line (type14).
AD[1:0] will both be ZERO during the address phase in-
dicating a linear burst order. All four byte enable signals
will be ZERO during the data phase as the Am79C974
controller always reads a full 32-bit word when in burst
TRDY
IRDY
C/BE
REQ
GNT
PAR
CLK
AD
1
DEVSEL is sampled by the Am79C974 controller.
2
3
ADDR
1110
4
PAR
Figure 9. Burst Read Cycles
5
0000
P R E L I M I N A R Y
DATA
Am79C974
6
PAR
mode.
Figure 9 shows a typical burst read access. The
Am79C974 controller arbitrates for the bus, is granted
access, and reads four 32-bit words (DWORD) from
system memory and then releases the bus. All four data
phases in this example take two clock cycles each,
which is determined by the timing of TRDY.
7
DATA
8
PAR
9
DATA
10
PAR
11
DATA
12
AMD
18681A-13
PAR
13
35
Related parts for am79c974
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Advanced Micro Devices [4,096-Bit (512x8) Bipolar PROM]
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
Advanced Micro Devices [4,096-Bit (512x8) Bipolar PROM]
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
Advanced Micro Devices [8 Megabit (512 K x 16-Bit) CMOS 3.0 Volt-only Burst Mode Flash Memory]
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
M41000001YAdvanced Micro Devices [32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory and 4 Mbit (512 K x 8-Bit/256 K x 16-Bit) Static RAM]
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
Advanced Burst Error Processor
Manufacturer:
Advanced Micro Devices
Part Number:
Description:
Serial interface adapter (SIA)
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
Universal interrupt controller
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
256 kilobit CMOS EPROM
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
2048 x 8 static RAM, 100ns
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
Three-State Octal Buffers
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
AM2966PCOctal Dynamic Memory Drivers with Three-State Outputs
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
Three-State Octal Buffers
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
Three-State Octal Buffers
Manufacturer:
Advanced Micro Devices
Datasheet:
Part Number:
Description:
TTL programmable array logic, 7ns
Manufacturer:
Advanced Micro Devices
Datasheet: